
CORE COMFORT HVAC · ARIZONA
Rooftop HVAC Replacement for Flat-Roof Homes
Assess and replace aging rooftop packaged units with right-sized equipment.
Many Phoenix-area homes with flat roofs use rooftop packaged HVAC units. When that unit ages or fails, replacement requires safe access and a unit matched to your home and ductwork.

What a rooftop replacement involves
- Inspection of your existing rooftop unit and ductwork
- Assessment of capacity and whether the old unit was properly sized
- Safe removal of the old unit
- Installation of a right-sized replacement rooftop unit
- Start-up, testing, and a walkthrough of operation

Replacement considerations
- Roof access for removing and installing the unit
- Condition of the existing curb and duct connections
- Ductwork sizing for the new unit
- Electrical compatibility
- Cooling and heating load of your home

A LITTLE CLARITY BEFORE YOU DECIDE
Frequently Asked Questions
How long does a rooftop unit replacement take?
A straightforward replacement is often done in a day; access and curb or duct modifications can extend timing.
Can you reuse the existing curb?
Often yes if it's in good condition and matches the new unit. We inspect it as part of your assessment.
Do rooftop units heat and cool?
Many rooftop packaged units provide both heating and cooling.
How do I know it’s time to replace?
Age, frequent repairs, and poor performance are common signs. We give you a clear repair-versus-replace recommendation.
How do I get started?
Call (602) 960-2278 or use our Contact page.
Replacing a Rooftop Unit?
We assess access, the existing curb, and ductwork before quoting your replacement.

Prefer to talk? Call (602) 960-2278.

